These Four Degrees are on the cusp of a lot of milestones

Magnificent effort Team SABAP2. On the ADU's Facebook page it says: "The citizen scientists who participate in the second bird atlas project, SABAP2, are especially encouraged to visit all 576 pentads in this area annually. It is the four one-degree grid cells centred on Gauteng in which about 30% of South Africa's population lives. There is huge pressure for development, and therefore huge pressure on biodiversity.

"Today, the 2013 project stands at the cusp of a lot of milestones. Perhaps all of them will be surpassed this weekend!

"88.9% of pentads have at least one visit. Six more will get us to beyond 90% coverage, and mean that the percentage not yet visited is below 10%.

"49.5% of pentads have two or more checklists. Three checklists from pentads with only one list will mean that more than half the pentads have at least two visits.

"32.8% of pentads have three or more checklists. Getting a third checklists for three pentads which currently have two checklists will mean that more than one third of pentads have three or more checklists.

"24.7% of pentads have four or more checklists, and are GREEN or darker colours on the this map. Only two pentads with three lists need a fourth checklist to get this figure to 25%. That is an astonishing achievement. Four or more checklists for a quarter of this area in 2013 alone."

The digits inside the pentads on this map are the numbers of checklists for the pentad this year so far. Once the number of checklists gets into double figures, this is represented by a *. The map shows the Four Degrees region, plus two rows of pentads around the edges – it would be nice to get lots of these visited too this year, especially along the southern edge!

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